User Guide

Modifies settings for a DB instance. You can change one or more database configuration parameters by specifying these parameters and the new values in the request. To learn what modifications you can make to your DB instance, call describe-valid-db-instance-modifications before you call modify-db-instance .

The DB instance identifier. This value is stored as a lowercase string.

Constraints:

Must match the identifier of an existing DBInstance.

--allocated-storage (integer)

The new amount of storage (in gibibytes) to allocate for the DB instance.

For MariaDB, MySQL, Oracle, and PostgreSQL, the value supplied must be at least 10% greater than the current value. Values that are not at least 10% greater than the existing value are rounded up so that they are 10% greater than the current value.

For the valid values for allocated storage for each engine, see create-db-instance .

--db-instance-class (string)

The new compute and memory capacity of the DB instance, for example, db.m4.large . Not all DB instance classes are available in all AWS Regions, or for all database engines. For the full list of DB instance classes, and availability for your engine, see DB Instance Class in the Amazon RDS User Guide.

If you modify the DB instance class, an outage occurs during the change. The change is applied during the next maintenance window, unless ApplyImmediately is specified as true for this request.

Default: Uses existing setting

--db-subnet-group-name (string)

The new DB subnet group for the DB instance. You can use this parameter to move your DB instance to a different VPC. If your DB instance is not in a VPC, you can also use this parameter to move your DB instance into a VPC. For more information, see Updating the VPC for a DB Instance .

Changing the subnet group causes an outage during the change. The change is applied during the next maintenance window, unless you specify true for the ApplyImmediately parameter.

Constraints: If supplied, must match the name of an existing DBSubnetGroup.

Example: mySubnetGroup

--db-security-groups (list)

A list of DB security groups to authorize on this DB instance. Changing this setting doesn't result in an outage and the change is asynchronously applied as soon as possible.

Constraints:

If supplied, must match existing DBSecurityGroups.

Syntax:

"string" "string" ...

--vpc-security-group-ids (list)

A list of EC2 VPC security groups to authorize on this DB instance. This change is asynchronously applied as soon as possible.

Amazon Aurora

Not applicable. The associated list of EC2 VPC security groups is managed by the DB cluster. For more information, see modify-db-cluster .

Constraints:

If supplied, must match existing VpcSecurityGroupIds.

Syntax:

"string" "string" ...

--apply-immediately | --no-apply-immediately (boolean)

Specifies whether the modifications in this request and any pending modifications are asynchronously applied as soon as possible, regardless of the PreferredMaintenanceWindow setting for the DB instance.

If this parameter is set to false , changes to the DB instance are applied during the next maintenance window. Some parameter changes can cause an outage and are applied on the next call to reboot-db-instance , or the next failure reboot. Review the table of parameters in Modifying a DB Instance and Using the Apply Immediately Parameter to see the impact that setting ApplyImmediately to true or false has for each modified parameter and to determine when the changes are applied.

Default: false

--master-user-password (string)

The new password for the master user. The password can include any printable ASCII character except "/", """, or "@".

Changing this parameter doesn't result in an outage and the change is asynchronously applied as soon as possible. Between the time of the request and the completion of the request, the MasterUserPassword element exists in the PendingModifiedValues element of the operation response.

Amazon Aurora

Not applicable. The password for the master user is managed by the DB cluster. For more information, see modify-db-cluster .

Default: Uses existing setting

MariaDB

Constraints: Must contain from 8 to 41 characters.

Microsoft SQL Server

Constraints: Must contain from 8 to 128 characters.

MySQL

Constraints: Must contain from 8 to 41 characters.

Oracle

Constraints: Must contain from 8 to 30 characters.

PostgreSQL

Constraints: Must contain from 8 to 128 characters.

Note

Amazon RDS API actions never return the password, so this action provides a way to regain access to a primary instance user if the password is lost. This includes restoring privileges that might have been accidentally revoked.

--db-parameter-group-name (string)

The name of the DB parameter group to apply to the DB instance. Changing this setting doesn't result in an outage. The parameter group name itself is changed immediately, but the actual parameter changes are not applied until you reboot the instance without failover. The db instance will NOT be rebooted automatically and the parameter changes will NOT be applied during the next maintenance window.

Default: Uses existing setting

Constraints: The DB parameter group must be in the same DB parameter group family as this DB instance.

--backup-retention-period (integer)

The number of days to retain automated backups. Setting this parameter to a positive number enables backups. Setting this parameter to 0 disables automated backups.

Changing this parameter can result in an outage if you change from 0 to a non-zero value or from a non-zero value to 0. These changes are applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request. If you change the parameter from one non-zero value to another non-zero value, the change is asynchronously applied as soon as possible.

Amazon Aurora

Not applicable. The retention period for automated backups is managed by the DB cluster. For more information, see modify-db-cluster .

Default: Uses existing setting

Constraints:

Must be a value from 0 to 35

Can be specified for a MySQL Read Replica only if the source is running MySQL 5.6

Can be specified for a PostgreSQL Read Replica only if the source is running PostgreSQL 9.3.5

Cannot be set to 0 if the DB instance is a source to Read Replicas

--preferred-backup-window (string)

The daily time range during which automated backups are created if automated backups are enabled, as determined by the BackupRetentionPeriod parameter. Changing this parameter doesn't result in an outage and the change is asynchronously applied as soon as possible.

Amazon Aurora

Not applicable. The daily time range for creating automated backups is managed by the DB cluster. For more information, see modify-db-cluster .

Constraints:

Must be in the format hh24:mi-hh24:mi

Must be in Universal Time Coordinated (UTC)

Must not conflict with the preferred maintenance window

Must be at least 30 minutes

--preferred-maintenance-window (string)

The weekly time range (in UTC) during which system maintenance can occur, which might result in an outage. Changing this parameter doesn't result in an outage, except in the following situation, and the change is asynchronously applied as soon as possible. If there are pending actions that cause a reboot, and the maintenance window is changed to include the current time, then changing this parameter will cause a reboot of the DB instance. If moving this window to the current time, there must be at least 30 minutes between the current time and end of the window to ensure pending changes are applied.

Default: Uses existing setting

Format: ddd:hh24:mi-ddd:hh24:mi

Valid Days: Mon | Tue | Wed | Thu | Fri | Sat | Sun

Constraints: Must be at least 30 minutes

--multi-az | --no-multi-az (boolean)

Specifies if the DB instance is a Multi-AZ deployment. Changing this parameter doesn't result in an outage and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request.

--engine-version (string)

The version number of the database engine to upgrade to. Changing this parameter results in an outage and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request.

For major version upgrades, if a nondefault DB parameter group is currently in use, a new DB parameter group in the DB parameter group family for the new engine version must be specified. The new DB parameter group can be the default for that DB parameter group family.

Indicates that minor version upgrades are applied automatically to the DB instance during the maintenance window. Changing this parameter doesn't result in an outage except in the following case and the change is asynchronously applied as soon as possible. An outage will result if this parameter is set to true during the maintenance window, and a newer minor version is available, and RDS has enabled auto patching for that engine version.

The new Provisioned IOPS (I/O operations per second) value for the RDS instance.

Changing this setting doesn't result in an outage and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request. If you are migrating from Provisioned IOPS to standard storage, set this value to 0. The DB instance will require a reboot for the change in storage type to take effect.

If you choose to migrate your DB instance from using standard storage to using Provisioned IOPS, or from using Provisioned IOPS to using standard storage, the process can take time. The duration of the migration depends on several factors such as database load, storage size, storage type (standard or Provisioned IOPS), amount of IOPS provisioned (if any), and the number of prior scale storage operations. Typical migration times are under 24 hours, but the process can take up to several days in some cases. During the migration, the DB instance is available for use, but might experience performance degradation. While the migration takes place, nightly backups for the instance are suspended. No other Amazon RDS operations can take place for the instance, including modifying the instance, rebooting the instance, deleting the instance, creating a Read Replica for the instance, and creating a DB snapshot of the instance.

Constraints: For MariaDB, MySQL, Oracle, and PostgreSQL, the value supplied must be at least 10% greater than the current value. Values that are not at least 10% greater than the existing value are rounded up so that they are 10% greater than the current value.

Default: Uses existing setting

--option-group-name (string)

Indicates that the DB instance should be associated with the specified option group. Changing this parameter doesn't result in an outage except in the following case and the change is applied during the next maintenance window unless the ApplyImmediately parameter is set to true for this request. If the parameter change results in an option group that enables OEM, this change can cause a brief (sub-second) period during which new connections are rejected but existing connections are not interrupted.

Permanent options, such as the TDE option for Oracle Advanced Security TDE, can't be removed from an option group, and that option group can't be removed from a DB instance once it is associated with a DB instance

--new-db-instance-identifier (string)

The new DB instance identifier for the DB instance when renaming a DB instance. When you change the DB instance identifier, an instance reboot will occur immediately if you set ApplyImmediately to true, or will occur during the next maintenance window if ApplyImmediately to false. This value is stored as a lowercase string.

Constraints:

Must contain from 1 to 63 letters, numbers, or hyphens.

The first character must be a letter.

Cannot end with a hyphen or contain two consecutive hyphens.

Example: mydbinstance

--storage-type (string)

Specifies the storage type to be associated with the DB instance.

If you specify Provisioned IOPS (io1 ), you must also include a value for the Iops parameter.

If you choose to migrate your DB instance from using standard storage to using Provisioned IOPS, or from using Provisioned IOPS to using standard storage, the process can take time. The duration of the migration depends on several factors such as database load, storage size, storage type (standard or Provisioned IOPS), amount of IOPS provisioned (if any), and the number of prior scale storage operations. Typical migration times are under 24 hours, but the process can take up to several days in some cases. During the migration, the DB instance is available for use, but might experience performance degradation. While the migration takes place, nightly backups for the instance are suspended. No other Amazon RDS operations can take place for the instance, including modifying the instance, rebooting the instance, deleting the instance, creating a Read Replica for the instance, and creating a DB snapshot of the instance.

Valid values: standard|gp2|io1

Default: io1 if the Iops parameter is specified, otherwise standard

--tde-credential-arn (string)

The ARN from the key store with which to associate the instance for TDE encryption.

--tde-credential-password (string)

The password for the given ARN from the key store in order to access the device.

--ca-certificate-identifier (string)

Indicates the certificate that needs to be associated with the instance.

--domain (string)

The Active Directory Domain to move the instance to. Specify none to remove the instance from its current domain. The domain must be created prior to this operation. Currently only a Microsoft SQL Server instance can be created in a Active Directory Domain.

--copy-tags-to-snapshot | --no-copy-tags-to-snapshot (boolean)

True to copy all tags from the DB instance to snapshots of the DB instance, and otherwise false. The default is false.

--monitoring-interval (integer)

The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB instance. To disable collecting Enhanced Monitoring metrics, specify 0. The default is 0.

If MonitoringRoleArn is specified, then you must also set MonitoringInterval to a value other than 0.

Valid Values: 0,1,5,10,15,30,60

--db-port-number (integer)

The port number on which the database accepts connections.

The value of the DBPortNumber parameter must not match any of the port values specified for options in the option group for the DB instance.

Your database will restart when you change the DBPortNumber value regardless of the value of the ApplyImmediately parameter.

apply-immediately value that indicates if the DB instance has a publicly resolvable DNS name. Set to True to make the DB instance Internet-facing with a publicly resolvable DNS name, which resolves to a public IP address. Set to False to make the DB instance internal with a DNS name that resolves to a private IP address.

PubliclyAccessible only applies to DB instances in a VPC. The DB instance must be part of a public subnet and PubliclyAccessible must be true in order for it to be publicly accessible.

Changes to the PubliclyAccessible parameter are applied immediately regardless of the value of the ApplyImmediately parameter.

If MonitoringInterval is set to a value other than 0, then you must supply a MonitoringRoleArn value.

--domain-iam-role-name (string)

The name of the IAM role to use when making API calls to the Directory Service.

--promotion-tier (integer)

A value that specifies the order in which an Aurora Replica is promoted to the primary instance after a failure of the existing primary instance. For more information, see Fault Tolerance for an Aurora DB Cluster .

True to enable Performance Insights for the DB instance, and otherwise false.

--performance-insights-kms-key-id (string)

The AWS KMS key identifier for encryption of Performance Insights data. The KMS key ID is the Amazon Resource Name (ARN), KMS key identifier, or the KMS key alias for the KMS encryption key.

--cloudwatch-logs-export-configuration (structure)

The configuration setting for the log types to be enabled for export to CloudWatch Logs for a specific DB instance or DB cluster.

Shorthand Syntax:

EnableLogTypes=string,string,DisableLogTypes=string,string

JSON Syntax:

{"EnableLogTypes":["string",...],"DisableLogTypes":["string",...]}

--cli-input-json (string)
Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values.

--generate-cli-skeleton (string)
Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

This data type is used as a response element in the describe-db-instances action.

DBInstanceIdentifier -> (string)

Contains a user-supplied database identifier. This identifier is the unique key that identifies a DB instance.

DBInstanceClass -> (string)

Contains the name of the compute and memory capacity class of the DB instance.

Engine -> (string)

Provides the name of the database engine to be used for this DB instance.

DBInstanceStatus -> (string)

Specifies the current state of this database.

MasterUsername -> (string)

Contains the master username for the DB instance.

DBName -> (string)

The meaning of this parameter differs according to the database engine you use. For example, this value returns MySQL, MariaDB, or PostgreSQL information when returning values from create-db-instance-read-replica since Read Replicas are only supported for these engines.

MySQL, MariaDB, SQL Server, PostgreSQL

Contains the name of the initial database of this instance that was provided at create time, if one was specified when the DB instance was created. This same name is returned for the life of the DB instance.

Type: db-instance-identifier

Oracle

Contains the Oracle System ID (SID) of the created DB instance. Not shown when the returned parameters do not apply to an Oracle DB instance.

Endpoint -> (structure)

Specifies the connection endpoint.

Address -> (string)

Specifies the DNS address of the DB instance.

Port -> (integer)

Specifies the port that the database engine is listening on.

HostedZoneId -> (string)

Specifies the ID that Amazon Route 53 assigns when you create a hosted zone.

AllocatedStorage -> (integer)

Specifies the allocated storage size specified in gibibytes.

InstanceCreateTime -> (timestamp)

Provides the date and time the DB instance was created.

PreferredBackupWindow -> (string)

Specifies the daily time range during which automated backups are created if automated backups are enabled, as determined by the BackupRetentionPeriod .

BackupRetentionPeriod -> (integer)

Specifies the number of days for which automatic DB snapshots are retained.

DBSecurityGroups -> (list)

Provides List of DB security group elements containing only DBSecurityGroup.Name and DBSecurityGroup.Status subelements.

(structure)

This data type is used as a response element in the following actions:

modify-db-instance

reboot-db-instance

restore-db-instance-from-db-snapshot

restore-db-instance-to-point-in-time

DBSecurityGroupName -> (string)

The name of the DB security group.

Status -> (string)

The status of the DB security group.

VpcSecurityGroups -> (list)

Provides a list of VPC security group elements that the DB instance belongs to.

(structure)

This data type is used as a response element for queries on VPC security group membership.

VpcSecurityGroupId -> (string)

The name of the VPC security group.

Status -> (string)

The status of the VPC security group.

DBParameterGroups -> (list)

Provides the list of DB parameter groups applied to this DB instance.

(structure)

The status of the DB parameter group.

This data type is used as a response element in the following actions:

create-db-instance

create-db-instance-read-replica

delete-db-instance

modify-db-instance

reboot-db-instance

restore-db-instance-from-db-snapshot

DBParameterGroupName -> (string)

The name of the DP parameter group.

ParameterApplyStatus -> (string)

The status of parameter updates.

AvailabilityZone -> (string)

Specifies the name of the Availability Zone the DB instance is located in.

DBSubnetGroup -> (structure)

Specifies information on the subnet group associated with the DB instance, including the name, description, and subnets in the subnet group.

DBSubnetGroupName -> (string)

The name of the DB subnet group.

DBSubnetGroupDescription -> (string)

Provides the description of the DB subnet group.

VpcId -> (string)

Provides the VpcId of the DB subnet group.

SubnetGroupStatus -> (string)

Provides the status of the DB subnet group.

Subnets -> (list)

Contains a list of Subnet elements.

(structure)

This data type is used as a response element in the describe-db-subnet-groups action.

SubnetIdentifier -> (string)

Specifies the identifier of the subnet.

SubnetAvailabilityZone -> (structure)

Contains Availability Zone information.

This data type is used as an element in the following data type:

OrderableDBInstanceOption

Name -> (string)

The name of the availability zone.

SubnetStatus -> (string)

Specifies the status of the subnet.

DBSubnetGroupArn -> (string)

The Amazon Resource Name (ARN) for the DB subnet group.

PreferredMaintenanceWindow -> (string)

Specifies the weekly time range during which system maintenance can occur, in Universal Coordinated Time (UTC).

PendingModifiedValues -> (structure)

Specifies that changes to the DB instance are pending. This element is only included when changes are pending. Specific changes are identified by subelements.

DBInstanceClass -> (string)

Contains the new DBInstanceClass for the DB instance that will be applied or is currently being applied.

AllocatedStorage -> (integer)

Contains the new AllocatedStorage size for the DB instance that will be applied or is currently being applied.

MasterUserPassword -> (string)

Contains the pending or currently-in-progress change of the master credentials for the DB instance.

Port -> (integer)

Specifies the pending port for the DB instance.

BackupRetentionPeriod -> (integer)

Specifies the pending number of days for which automated backups are retained.

MultiAZ -> (boolean)

Indicates that the Single-AZ DB instance is to change to a Multi-AZ deployment.

If present, specifies the name of the character set that this instance is associated with.

SecondaryAvailabilityZone -> (string)

If present, specifies the name of the secondary Availability Zone for a DB instance with multi-AZ support.

PubliclyAccessible -> (boolean)

Specifies the accessibility options for the DB instance. A value of true specifies an Internet-facing instance with a publicly resolvable DNS name, which resolves to a public IP address. A value of false specifies an internal instance with a DNS name that resolves to a private IP address.

Default: The default behavior varies depending on whether a VPC has been requested or not. The following list shows the default behavior in each case.

Default VPC: true

VPC: false

If no DB subnet group has been specified as part of the request and the PubliclyAccessible value has not been set, the DB instance is publicly accessible. If a specific DB subnet group has been specified as part of the request and the PubliclyAccessible value has not been set, the DB instance is private.

StatusInfos -> (list)

The status of a Read Replica. If the instance is not a Read Replica, this is blank.

(structure)

Provides a list of status information for a DB instance.

StatusType -> (string)

This value is currently "read replication."

Normal -> (boolean)

apply-immediately value that is true if the instance is operating normally, or false if the instance is in an error state.

Status -> (string)

Status of the DB instance. For a StatusType of read replica, the values can be replicating, error, stopped, or terminated.

Message -> (string)

Details of the error if there is an error for the instance. If the instance is not in an error state, this value is blank.

StorageType -> (string)

Specifies the storage type associated with DB instance.

TdeCredentialArn -> (string)

The ARN from the key store with which the instance is associated for TDE encryption.

DbInstancePort -> (integer)

Specifies the port that the DB instance listens on. If the DB instance is part of a DB cluster, this can be a different port than the DB cluster port.

DBClusterIdentifier -> (string)

If the DB instance is a member of a DB cluster, contains the name of the DB cluster that the DB instance is a member of.

StorageEncrypted -> (boolean)

Specifies whether the DB instance is encrypted.

KmsKeyId -> (string)

If StorageEncrypted is true, the AWS KMS key identifier for the encrypted DB instance.

DbiResourceId -> (string)

The AWS Region-unique, immutable identifier for the DB instance. This identifier is found in AWS CloudTrail log entries whenever the AWS KMS key for the DB instance is accessed.

An Active Directory Domain membership record associated with the DB instance.

Domain -> (string)

The identifier of the Active Directory Domain.

Status -> (string)

The status of the DB instance's Active Directory Domain membership, such as joined, pending-join, failed etc).

FQDN -> (string)

The fully qualified domain name of the Active Directory Domain.

IAMRoleName -> (string)

The name of the IAM role to be used when making API calls to the Directory Service.

CopyTagsToSnapshot -> (boolean)

Specifies whether tags are copied from the DB instance to snapshots of the DB instance.

MonitoringInterval -> (integer)

The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB instance.

EnhancedMonitoringResourceArn -> (string)

The Amazon Resource Name (ARN) of the Amazon CloudWatch Logs log stream that receives the Enhanced Monitoring metrics data for the DB instance.

MonitoringRoleArn -> (string)

The ARN for the IAM role that permits RDS to send Enhanced Monitoring metrics to Amazon CloudWatch Logs.

PromotionTier -> (integer)

A value that specifies the order in which an Aurora Replica is promoted to the primary instance after a failure of the existing primary instance. For more information, see Fault Tolerance for an Aurora DB Cluster .

DBInstanceArn -> (string)

The Amazon Resource Name (ARN) for the DB instance.

Timezone -> (string)

The time zone of the DB instance. In most cases, the Timezone element is empty. Timezone content appears only for Microsoft SQL Server DB instances that were created with a time zone specified.

IAMDatabaseAuthenticationEnabled -> (boolean)

True if mapping of AWS Identity and Access Management (IAM) accounts to database accounts is enabled, and otherwise false.

IAM database authentication can be enabled for the following database engines